Smart Bracelet Watch Bluetooth 4.0 Ip67 SMS Reminder Sleep Tracker Calorie Burning Incoming Call (Elegant Black) Your healthy monitor:Help you keep a good habit,health and happiness follow you.Love life walking from now on:TW64 will record your step, distance and calorie, which can help you to set the target Sleep Monitor:TW64 is able to detect how long you sleep, through its health software, count up your time of deep sleep,light sleep Smart reminder: In-call reminder, sedentary reminder, drinking reminder, wake up alarm etc. Water-resistant to 3.0 meters, best for sport.Light as feather, with advanced coloring and never fade. Function description:Step counts, Distance measuring, Calorie Consumption management, Sleep management, Event trigger (water drinking, taking medicine, meeting etc), call reminder, message reminder, clock, sedentary reminder, anti- lost (positive and negative direction lookup), remote camera, vibration alarm clock.Compatible With: For ios 6.1 + version, Android 4.3 + version.